<script setup lang="ts">
import Quill from 'quill';
import 'quill/dist/quill.core.css';
import 'quill/dist/quill.snow.css';
import 'quill/dist/quill.bubble.css';
import QuillBetterTable from 'quill-better-table';
import 'quill-better-table/dist/quill-better-table.css';
import {getToken} from '@/utils/auth';
import {ElMessage} from 'element-plus';

Quill.register({'modules/better-table': QuillBetterTable}, true);
const props = defineProps({
  /* 编辑器的内容 */
  modelValue: {
    type: String,
    default: ''
  },
  /* 高度 */
  height: {
    type: Number,
    default: null
  },
  /* 最小高度 */
  minHeight: {
    type: Number,
    default: null
  },
  /* 只读 */
  readOnly: {
    type: Boolean,
    default: false
  },
  /* 上传文件大小限制(MB) */
  fileSize: {
    type: Number,
    default: 5
  },
  /* 类型（base64格式、url格式） */
  type: {
    type: String,
    default: 'url'
  }
});

const uploadUrl = ref(import.meta.env.VITE_APP_BASE_API + '/common/upload'); // 上传的图片服务器地址
const headers = ref({
  Authorization: 'Bearer ' + getToken()
});
let DataQuill = null;
let currentValue = '';
const options = {
  theme: 'snow',
  bounds: document.body,
  debug: 'warn',
  modules: {
    // 工具栏配置
    toolbar: {
      container: [
        ['bold', 'italic', 'underline', 'strike'],       // 加粗 斜体 下划线 删除线
        ['blockquote', 'code-block'],                    // 引用  代码块
        [{list: 'ordered'}, {list: 'bullet'}],       // 有序、无序列表
        [{indent: '-1'}, {indent: '+1'}],            // 缩进
        [{size: ['small', false, 'large', 'huge']}],   // 字体大小
        [{header: [1, 2, 3, 4, 5, 6, false]}],         // 标题
        [{color: []}, {background: []}],             // 字体颜色、字体背景颜色
        [{align: []}],                                 // 对齐方式
        ['clean'],                                       // 清除文本格式
        ['link', 'image', 'video'],                       // 链接、图片、视频
        [{'table': 'TD'}]                             // 表格
      ],
      handlers: {
        'table': function () {
          DataQuill.getModule('better-table').insertTable(3, 3);
        }
      }
    },
    table: false,
    'better-table': {
      operationMenu: {
        items: {
          unmergeCells: {
            text: 'Another unmerge cells name'
          }
        },
        background: {
          color: '#333'
        },
        color: {
          colors: ['green', 'red', 'yellow', 'blue', 'white'],
          text: 'background:'
        }
      }
    },
    keyboard: {
      bindings: QuillBetterTable.keyboardBindings
    }
  },
  placeholder: '请输入内容',
  readOnly: props.readOnly
};

const styles = computed(() => {
  let style = {
    minHeight: undefined,
    height: undefined
  };
  if (props.minHeight) {
    style.minHeight = `${props.minHeight}px`;
  }
  if (props.height) {
    style.height = `${props.height}px`;
  }
  return style;
});
const editor = ref(null);
const upload = ref(null);
watch(() => props.modelValue, val => {
  if (val !== currentValue) {
    currentValue = val === null ? '' : val;
    if (DataQuill) {
      DataQuill.setContents(currentValue);
    }
  }
}, {immediate: true});
const emit = defineEmits(['update:modelValue', 'on-change', 'on-text-change', 'on-selection-change', 'on-editor-change']);
onMounted(() => {
  init();
});
onBeforeUnmount(() => {
  DataQuill = null;
});

const init = () => {
  DataQuill = new Quill(editor.value, options as any);
  // 如果设置了上传地址则自定义图片上传事件
  if (props.type == 'url') {
    let toolbar = DataQuill.getModule('toolbar');
    toolbar.addHandler('image', (value) => {
      if (value) {
        // upload.value.$children[0].$refs.input.click();
        console.log(value);
      } else {
        // quill.format("image", false);
      }
    });
  }
  console.log(DataQuill);

  DataQuill.setContents(currentValue);
  DataQuill.on('text-change', (delta, oldDelta, source) => {
    const html = editor.value.children[0].innerHTML;
    const text = DataQuill.getText();
    const quill = DataQuill;
    currentValue = html;
    emit('update:modelValue', html);
    emit('on-change', {html, text, quill});
  });
  DataQuill.on('text-change', (delta, oldDelta, source) => {
    emit('on-text-change', delta, oldDelta, source);
  });
  DataQuill.on('selection-change', (range, oldRange, source) => {
    emit('on-selection-change', range, oldRange, source);
  });
  DataQuill.on('editor-change', (eventName, ...args) => {
    emit('on-editor-change', eventName, ...args);
  });
}

// 上传前校检格式和大小
const handleBeforeUpload = (file: any) => {
  const type = ['image/jpeg', 'image/jpg', 'image/png', 'image/svg'];
  const isJPG = type.includes(file.type);
  // 检验文件格式
  if (!isJPG) {
    ElMessage.error(`图片格式错误!`);
    return false;
  }
  // 校检文件大小
  if (props.fileSize) {
    const isLt = file.size / 1024 / 1024 < props.fileSize;
    if (!isLt) {
      ElMessage.error(`上传文件大小不能超过 ${props.fileSize} MB!`);
      return false;
    }
  }
  return true;
}

const handleUploadSuccess = (res: any, file: any) => {
  // 如果上传成功
  if (res.code == 200) {
    // 获取富文本组件实例
    let quill = DataQuill;
    // 获取光标所在位置
    let length = quill.getSelection().index;
    // 插入图片  res.url为服务器返回的图片地址
    quill.insertEmbed(length, 'image', import.meta.env.VITE_APP_BASE_API + res.fileName);
    // 调整光标到最后
    quill.setSelection(length + 1);
  } else {
    ElMessage.error('图片插入失败');
  }
}

const handleUploadError = () => {
  ElMessage.error('图片插入失败');
}

</script>

<template>
  <div>
    <el-upload :action="uploadUrl" :before-upload="handleBeforeUpload" :on-success="handleUploadSuccess"
               :on-error="handleUploadError" name="file" :show-file-list="false" :headers="headers"
               style="display: none"
               ref="upload" v-if="type == 'url'">
    </el-upload>
    <div class="editor" ref="editor" :style="styles"></div>
  </div>
</template>

<style scoped>
.editor,
.ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}

.quill-img {
  display: none;
}

.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
</style>